Comparisons between leagues across countries for SARS-CoV-2 infections among athletes following resumption of football
| Country | Rt * | Testing length (weeks) | Positivity rate (%) | Infected/tested athletes† | Infections per week per 1000 athletes | Infection rate (%) | Mass outbreaks‡ |
| Brazil | 1.13 | 22 | 2.11 | 501/4269 | 5.3 | 11.7 | 25 |
| Denmark (2) | 0.73 | 11 | 0.06 | 4/748 | 0.5 | 0.5 | 0 |
| Qatar (3) | 0.94 | 9 | 0.59 | 36§ / 549 | 4.8 | 4.4 | 0 |
| Germany (4) | 0.74 | 8 | N/A | 8¶ / 1079 | 0.9 | 0.7 | 0 |
*Case reproduction number at the time of reopening football.20 21
†PCR-confirmed cases.
‡Defined as ≥5 infections within a team in a 2-week period.
§12 positive cases were identified at a quarantine period preceding competition.
¶All positive cases were identified 2–5 days before the onset of regular team training.
NA, not available.